Buying a used shipping container can be just as good as getting a brand new shipping container if you just choose wisely. According to blue line containers , it does not mean that just because it has been used previously that it is already of poor quality. A lot of used containers out there have been taken care of very well by its previous owners. You just have to know how to examine one.
When you are examining a used shipping container, the first thing that you need to ensure is that it does not have any holes or cracks. Otherwise, it would no longer be water tight and wind tight. In order to find out if it is, go inside a shipping container and close the door (preferably with someone else standing guard outside to open it for you afterwards). If you see any spark of light inside, that would be an indication that your container already has holes or cracks. Look for another one.
The next thing that you need to check on would be the doors of your shipping container. Make sure that they still open and close correctly. Check to see for signs of rust which may affect its function. Then, check to make sure that the ceiling or flooring does not have any soft areas which may give way anytime within the travel period. Finally, make sure that the lock mechanism is still functioning perfectly. If you got these all covered, then you have found yourself a good quality shipping container.